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Animation with async/await
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| <html xmlns="http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <script src="http://d3js.org/d3.v4.min.js" charset="utf-8" type="text/javascript"></script> | |
| </head> | |
| <style> | |
| html,body { | |
| height: 100%; | |
| width: 100%; | |
| margin: 0; | |
| } | |
| </style> | |
| <script> | |
| async function start() { | |
| // some crap | |
| d3.transition.prototype.end = function() { | |
| return new Promise((resolve, reject) => { | |
| this.on("interrupt", reject).on("end", resolve); | |
| }); | |
| }; | |
| const w = 500; | |
| const h = 500; | |
| const r = 20; | |
| const t = 1500; | |
| const svg = d3.select('svg'); | |
| const circle = svg.append("circle").attr("r", r).attr("cx", w / 4).attr("cy", h / 4); | |
| while (true) { | |
| console.log('1'); | |
| await circle.transition().duration(t).attr("cy", h * 3 / 4).end(); | |
| console.log('2'); | |
| await circle.transition().duration(t).attr("cx", w * 3 / 4).end(); | |
| console.log('3'); | |
| await circle.transition().duration(t).attr("cy", h * 1 / 4).end(); | |
| console.log('4'); | |
| await circle.transition().duration(t).attr("cx", w * 1 / 4).end(); | |
| } | |
| } | |
| </script> | |
| <body onload="start()"> | |
| <svg width="500" height="500"></svg> | |
| </body> | |
| <html/> |
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